what more you can tell us about what happened in benghazi? >> reporter: first what's happening here, a much calmer situation today. lots of security force, protecting the embassy compound. just a few dozen protesters here today. what we know is that the white house has confirmed that the u.s. ambassador was at the benghazi consulate, killed when that consulate came under attack along with three other americans. those americans have not yet been identified. andrea mitchell says at lease one of them was another diplomat. the other two identities have not been released pending next of kin notification. all of this began after a video which we've talked about, ap sb apenter an internet movie that perhaps no one would ever have noticed except an egyptian cleric noticed it, me ade it a rallying cry, and then there was a rumor mill that began when reports cairo that this was a big hollywood movie that was going to be broadcast nationwide on the anniversary of 9/11. so people were told this movie which almost no one here has seen was offensive and is